Hardness tester is a kind of hardness testing instrument. The hardness measurement of metals was first proposed by Leomr, which is defined as the ability of a material to resist the pressing of hard objects into its surface. It is one of the
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The hydraulic universal testing machine is a hydraulic material testing machine that can perform various tests such as tension, compression and bending. The hydraulic universal testing machine is used for tension, compression, bending and sh